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<TITLE>Design rules pad</TITLE>
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<P><A NAME="idh_design_rules_pad"></A><font size=5><U>Design rules pad</U><br>&nbsp;</font></P>

<P>When creating a standard geometry (DIP,SOIC,BGA,PGA,QFP)  a set of rules can be used for creating pads with the right padsize, soldermask/paste mask size.</P>

<P>For DIP/PGA the drill size will be used as a reference for the padsize, soldermask size, anti powerpad, inner padsize.</P>

<P>For SOIC/BGA/QFP the padsize will be used as a reference for the pastemask size, soldermask size.</P>

<P>In the geom.ini file there are seven rule name to define the additions to the drill or padsize.</P>

<P>Pad size = Drill size + DefaultRulePad (through hole)</P>

<P>Soldermask = Drill size + DefaultRuleSolderMask_TH (through hole)</P>

<P>Anti power pad = Drill size + DefaultRuleAntiPowerPad (through hole)</P>

<P>Inner pad = Drill size + DefaultRuleInnerPad (through hole)</P>

<P>Soldermask = Pad size + DefaultRuleSolderMask_SMD (SMD)</P>

<P>Pastemask = Pad size + DefaultRulePasteMask_SMD (SMD)</P>

<P>There is also a rule for the standard clearance: DefaultRuleClearance</P>

<P><A HREF="initialisation_file_geom_ini.htm"><IMG SRC="../images/button6.gif" ALT="" BORDER=0>Initialisation file geom.ini</A></P>

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